Information Processing Apparatus, Information Processing Method and Computer Readable Medium

1. An information processing apparatus comprising: a rule information output section that outputs rule information to a storage section in response to a rule specifying operation for a screen on which display object information to be displayed is displayed, the rule information indicating a rule of displaying on the screen specified portions of the display object information in an enlarged manner in a specified sequence; and a display content update section that, using a processor, updates content displayed on the screen in response to display content update operations sequentially accepted from a user so that portions of the display object information specified in the rule indicated by the rule information are enlarged and displayed on the screen in a sequence specified in the rule indicated by the rule information, wherein: the rule information output by the rule information output section to the storage section corresponds to a line on the display object information specified as the user traces on the screen, the display content update section, in response to a forward display content update operation, updates the content displayed on the screen such that a next portion of the display object information along the line in the sequence specified in the rule indicated by the rule information and corresponding to the sequence defined by the tracing of the line on the screen is enlarged and displayed on the screen, and the display content update section updates the content displayed on the screen so that the portion of the display objects information to be enlarged and displayed is displayed on the screen at an enlargement ratio specified by the user in response to an enlarging operation accepted from the user.

2. The information processing apparatus according to claim 1 , wherein the rule information output by the rule information output section further corresponds to positions on the display object information indicated by information acquired in order at a predetermined time interval when the user traces on the screen, and the display content update section updates the content displayed on the screen so that the portion of the display object information surrounding each of the positions is enlarged and displayed on the screen in the sequence defined by the order of the positions.

3. The information processing apparatus according to claim 1 , wherein the display object information corresponds to one page of document information containing a plurality of pages, and the display content update section updates the content displayed on the screen so that the portions of the display object information are enlarged and displayed on the screen according to the rule indicated by the rule information for each page of the document information.

4. The information processing apparatus according to claim 1 , wherein the rule information output by the rule information output section further contains information indicating an end position corresponding to a final portion of the display object to be enlarged and displayed on the screen to the storage section, and upon acceptance of the display content update operation while the final portion of the display object to be enlarged and displayed is displayed on the screen, the display content update section does not update the content displayed on the screen.

5. An information processing apparatus comprising: a rule information output section that outputs rule information to a storage section in response to a rule specifying operation for a screen on which display object information to be displayed is displayed, the rule information indicating a rule of displaying on the screen specified portions of the display object information in an enlarged manner in a specified sequence; and a display content update section that, using a processor, updates content displayed on the screen in response to display content update operations sequentially accepted from a user so that portions of the display object information specified in the rule indicated by the rule information are enlarged and displayed on the screen in a sequence specified in the rule indicated by the rule information, wherein: the rule information output by the rule information output section to the storage section corresponds to a line on the display object information specified as the user traces on the screen. the display content update section in response to a forward display content update operation, updates the content displayed on the screen such that a next portion of the display object information along the line in the sequence specified in the rule indicated by the rule information and corresponding to the sequence defined by the tracing of the line on the screen is enlarged and displayed on the screen, the rule information output by the rule information output section further corresponds to ordered positions in the display object information, and the display content update section updates the content displayed on the screen so that the portion of the display object information surrounding each of the ordered positions is enlarged and displayed on the screen in the sequence defined by the order of the positions.

6. The information processing apparatus according to claim 5 , wherein the rule information output by the rule information output section further contains information indicating an end position corresponding to a final portion of the display object to be enlarged and displayed on the screen to the storage section, and upon acceptance of the display content update operation while the final portion of the display object to be enlarged and displayed is displayed on the screen, the display content update section does not update the content displayed on the screen.

7. The information processing apparatus according to claim 5 , wherein the display object information corresponds to one page of document information containing a plurality of pages, and the display content update section updates the content displayed on the screen so that the portions of the display object information are enlarged and displayed on the screen according to the rule indicated by the rule information for each page of the document information.

8. The information processing apparatus according to claim 5 , wherein the rule information output by the rule information output section further corresponds to positions on the display object information indicated by information acquired in order at a predetermined time interval when the user traces on the screen, and the display content update section updates the content displayed on the screen so that the portion of the display object information surrounding each of the positions is enlarged and displayed on the screen in the sequence defined by the order of the positions.

9. A non-transitory computer readable medium storing a program causing a computer to execute a process for displaying information on a screen, the process comprising: outputting rule information to a storage section in response to a rule specifying operation for a screen on which display object information to be displayed is displayed, the rule information indicating a rule of displaying on the screen specified portions of the display object information in an enlarged manner in a specified sequence and corresponding to a line on the display object information specified as a user traces on the screen; updating content displayed on the screen in response to display content update operations sequentially accepted from the user so that portions of the display object information specified in the rule indicated by the rule information are enlarged and displayed on the screen in a sequence specified in the rule indicated by the rule information; and in response to a forward display content update operation, updating the content displayed on the screen such that a next portion of the display object information along the line in the sequence specified in the rule indicated by the rule information and corresponding to the sequence defined by the tracing of the line on the screen is enlarged and displayed on the screen, wherein in the updating the content displayed on the screen, the portion of the display object information to be enlarged and displayed is displayed on the screen at an enlargement ratio specified by the user in response to an enlarging operation accepted from the user.

10. The non-transitory computer readable medium according to claim 9 , wherein the rule information further corresponds to positions on the display object information indicated by information acquired in order at a predetermined time interval when the user traces on the screen, and the content displayed on the screen is updated so that the portion of the display object information surrounding each of the positions is enlarged and displayed on the screen in the sequence defined by the order of the positions.

11. The non-transitory computer readable medium according to claim 9 , wherein the display object information corresponds to one page of document information containing a plurality of pages, and the content displayed on the screen is updated so that the portions of the display object information are enlarged and displayed on the screen according to the rule indicated by the rule information for each page of the document information.

12. The non-transitory computer readable medium according to claim 9 , wherein the rule information further contains information indicating an end position corresponding to a final portion of the display object to be enlarged and displayed on the screen, and upon acceptance of the display content update operation while the final portion of the display object to be enlarged and displayed is displayed on the screen, the content displayed on the screen is not updated.

13. A non-transitory computer readable medium storing a program causing a computer to execute a process for displaying information on a screen, the process comprising: outputting rule information to a storage section in response to a rule specifying operation for a screen on which display object information to be displayed is displayed, the rule information indicating a rule of displaying on the screen specified portions of the display object information in an enlarged manner in a specified sequence and corresponding to a line on the display object information specified as a user traces on the screen; updating content displayed on the screen in response to display content update operations sequentially accepted from the user so that portions of the display object information specified in the rule indicated by the rule information are enlarged and displayed on the screen in a sequence specified in the rule indicated by the rule information; and in response to a forward display content update operation, updating the content displayed on the screen such that a next portion of the display object information along the line in the sequence specified in the rule indicated by the rule information and corresponding to the sequence defined by the tracing of the line on the screen is enlarged and displayed on the screen, wherein in the outputting rule information, the rule information further corresponds to ordered positions in the display object information, and wherein in the updating content displayed on the screen, the portion of the display object information surrounding each of the ordered positions is enlarged and displayed on the screen in the sequence defined by the order of the positions.

14. The non-transitory computer readable medium according to claim 13 , wherein the rule information further corresponds to positions on the display object information indicated by information acquired in order at a predetermined time interval when the user traces on the screen, and the content displayed on the screen is updated so that the portion of the display object information surrounding each of the positions is enlarged and displayed on the screen in the sequence defined by the order of the positions.

15. The non-transitory computer readable medium according to claim 13 , wherein the display object information corresponds to one page of document information containing a plurality of pages, and the content displayed on the screen is updated so that the portions of the display object information are enlarged and displayed on the screen according to the rule indicated by the rule information for each page of the document information.

16. The non-transitory computer readable medium according to claim 13 , wherein the rule information further contains information indicating an end position corresponding to a final portion of the display object to be enlarged and displayed on the screen, and upon acceptance of the display content update operation while the final portion of the display object to be enlarged and displayed is displayed on the screen, the content displayed on the screen is not updated.